Adjusted odds ratios for ovarian and endometrial cancer, according to duration of use and time since last use of oral and injectable contraceptives.

<p>All ORs adjusted for age at diagnosis, year of diagnosis, education, tobacco smoking, alcohol consumption, parity/age at first birth, number of sexual partners, urban/rural residence, and province of birth.</p>a<p>Heterogeneity for time since last use <10 y versus ≥10 y, within the two duration categories for ovarian cancer and within duration ≥5 y for endometrial cancer.